Reinstalling, resetting single user license

I'm frustrated, I had MathCad 14 installed on my laptop when my drive crashed. I'm trying to reinstall on my new drive when I get the message that I have exceeded the maximum number of single user licenses and rather than tell me were to obtain help, it suggest only buying additional licenses. We bought the software because my granddaughter needed to use it for a college class. I'm stuck as she is in a summer class and I can't the software to run on the same laptop.

I've put in a ticket for help but never received and answer.

Can anyone help me with this as I am frustrated. I've had tremendous help from all of the other software venders I've had to contact when reinstalling software.

Thank you in advance for any help on this matter

LQNgineer